Derrick Rose is making another big progression in his return from injury-a sign the injury-laden Chicago Bulls should welcome after having lost another star this week.
Rose is now able to take full physical contact in practice, Bulls coach Tom Thibodeau confirmed this week.
With Rose able to participate in the simulation of full NBA game contact, that essentially completes the last major hurdle of the former league MVP's rehabilitation. The main thing that Rose will be focusing on now will be to get back into the swing of actual NBA play.

what happens if say a East all star is traded to a western conference team before the all star game? do they still start for the east?

I think that, if he's a starter, he plays for the east (because the starters are voted by fans). But I don't know what happens if he is a reserve... Probably gets a selection, but he gets replaced by Stern (some similar turn of events as if he was injured)

I remember AI always used to start for the East and I'm pretty sure he was on pace to start again until he got traded. His votes got transferred to the West but he didn't start cause TMac/Kobe beat him out. He was named as a reserve on the West and then dropped out altogether cause of injury.